Jigging machinery for dressing ore.



No. 888,964. PATENTED MAY 26, 1908.

G.-J. DAWBARN.

JIGG ING MACHINERY FOR DRESSING ORE. APPLICATION IiLED NOV. 2 1904.

2 SHEETSSHBET 1 Wrmzssss INVENTOR? No. 888,964. PATENTED MAY 26, 1908.

' G. J. DA'WBARN.

JIGGING MACHINERY FOR DRESSING ORE.

APPLICATION FILED NOV. 2. 1904.

2 SHEETSSHEET 2.

UNITED STATES PATENT onrron.

GILBERT I. DAWBARN, OF BALLARAT, VICTORIA, AUSTRALIA, ASSIGNOR, BY MESNEASSIGN- To all whom it may concern:

Ore, of which the -followin'g is. a specificascription, reference beinghad to the accomjigging machinery for dressingores, espewater within ahutch moves with a longitudi- MENTS, TO ALLIS-CHALMERS COMPANY, OFMILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY. x r -L neeme'nacnnvnnv -Fort nnnssme can.

No. 888,964. Speeificationbf Letters Patent. Patented May 26, 1908.Application filed. November 2, 1904. Serial No. 231,123.

. j j byjpartitions extending well up under- Be it known'that I, GILBERTJ. DAWBARN, neath the sieve 5. The discharge of mate- 5., a sub ect ofthe'King of Great Britain, and rial from these compartments takes placeresident of Ballarat, Victoria, Australia, have through ports near thebottom of the hutch, invented certain new and useful lmprovea dischargespout '10 being shown connected ments in Jigging ,Machinery for Dressingto one of these ports for discharging'the niaterial 11. A slantpartition at the eii-d of tion, containing a full, clear, and exactdethe hutch forms a quiescent compartment 9 l for the settling of slimesdischarged later panymg drawings, formlng' a part hereof. through spout8, but this is not my invention.

Thi invention relates to improvements in launder 12 extends along theoutside of the hutch 6 and communicates therewith through ports 13provided with flap valves closing against discharge from the hutch.These ports are located at alevel just below the sieve 5. A separate ort14 forms communication between the aunder and hutch cially washing,separatlng and concentrating of ores.

It relates particularly to im rovemnts ,in the machine shown in thenited States- Patent Number 540,659 grante d' toHenry Richard HancockJune'11,"1.8.95, in which a sieve submerged or partlyY ubmerged inbeyond the end of the sieve.

This invention relates particularly to the guiding means for the sieveto cause it to nal motion as well as with a riseand fall. have a closedpath motion of a peculiar kind.

The object ofjthe invention is to improve By closed path motion is meanta motion the Hancock motion so as to give a more which during the returnstroke takes a diteflicient jigging action. ferent path than duringtheforward stroke.

In the accompanying drawings, Figure 1 This guiding-means is as follows:Side coin is aside elevation of a jigging machine emnecting-links 35extend for connection to the bodying the principles of my invention;.hutch'6, from the ends of one of the cross 8m Fig. 2 is a sectional'levation in a plane par-- bars 27 to which the side rods 29 are alsocon allel with that of Fig. 1; Fig. 3 is an ennected, the connections tothe cross bar all. larged elevation of -one of the two side 0011- beingpivotal. The dinks 35' extend at an necting-linzs causing the endwisemotion of angle to the vertical alongside the sides of" the sieve; Fig.4 is a section on the line 4-4 the-hutch throu 'h'blocks 34 pivoted onpins=- of Fig. 3 -sho'wing a detail of the adjustment 33 adjustably edin dove tail slots 32 for the side'connecting-links. formed in plates 31attached to the sides of Referring to the dra ng, a belt driven thehutch 6 oppositeeach'other. Each link shaft 17 has mounted thereon a flywheel 18 35 is formed with shoulders where it passes the hutch'6.

21, are respectively mounted on rock shafts justable-and taking the formof lock nuts 3-6 .23, 24. On the rock shafts 23, 24, are also in theillustration. There is thus provided a mounted crank arms 25, 26, whichserve to lost motion between thelink 135 and its block v a.

support the sieve 5 by means of side rods 29, 34, that is, a differenceof motion due to 30, extending upwardly from the ends of the loosenessof parts or play between the parts; .195

respective crank arms 25, 26, to which they lost motion connection is inthis way proare pinned and connecting at their upper vided between thesieve-and thehutch. The

ends to respective cross bars 27, 28, rigidly link 35 canbe calleda-passive means actu:

extended from the 'sieve 5 over the sides of ating the sieve, ifat.all,"passively by guiding I the upward sieve inotion received by ther The hutch 6 is mounted by intermediate sieve from the'a'ctiveactuating means the supports 1-5 on a masonry foundation 16. element ofwhich directly coacting with the The rock shafts 23; 24', and the beltdriven sieve beingthe side rod- 29. The activeactushaft 17are-conveniently mounted-under-. ating means-receives powei lorfforccfind neath the hutch 6 upon the supports 15. transmitsit to thesieve while the passive The hutch 6 is diyided into compartments 1 meansreceives and transmits no force but and a three-point cam 19. Rocklevers 20, throughits block 34, one of these being ad- 90 byit sconnections with other parts merely pass vely guldes the sieve andmodifies the motion thereof due to the active'actuating means.

iIn operation the sieve 5 will be'actuated to diiierent levels by theactuating mechanism "applied to the cross bars 27, 28. An upward*i'mpulse is-given to the sieve structural compelling means to" moveend-- :wise because of the This completes the formotion of translationand during the first part of the' motion from the minimum level thesieveis free from the influence of lost motion betweenthe artsconnecting. the sieve of the hutch.

ater thesieve is constrained to move so as to have its points ofattachment to side con- -links swing about the pivot pins @33 wit, thelinks 35 extended through blocks eeto move endwise in the one irectionduring thelatterpa-rt of its upward 35 extended? ward stroke. At thebeginning of the return stroke, that is timing the first part of thesieve motionfrom the maximum level the actuating mechanism is free tofall verticallv blygravity'with the sieve and the sieve is a sofree fromthe influence of; structural compelling means to move endwise in eitherdirection, there bemg no restraint .whatever u'nposed. This is becausethe links to retractin lenfithby sliding in theblocks sievels thereforenot free =inthe one direction.-

35 begin 34: When the nks 35 have retracted the extent of theirlost'motion in the block 34,

they exert a guiding effort upon the sieve to cause it to take ,allel tothe arc with rad 40 a motion of translation parins equal to the lengthof side connecti -link 35 retracted. During the latterpart of t l ereturn stroke the to move endwise retical motions which in practice arewidely i worked along and reaches the delivery differed from because ofthe immense amount of inertia and momentum of the loaded sieve.

The ore is delivered to the sieve and through the same in anefficientmanner bythe mechanism described. The water has a circulationfrom the launder to the hutch .thence up through the sieve and flowingalong in the same direction as that of the material on the sieve, end ofthe sieve and passes through the port 14 back to the launder Itshould'be understood that it is not desired "to be limited to the exactdetails of constructiondisclosed, for obvious modifications will occurto a person skilledin the art. -What is claimed and desired to secure byLette'rsPatent is,

1. In a jigging machine, the combination sieve to move.

sieve to move endwise,

The sieve is with a hutch and with These are the theowith a hutch anismfomactuating the sieve to different I 1 levels, andguiding means,additional to .the actuating mechanism,

from the influence of structural compelling means to move endwise ineither direction during the first part of the motion of the sieve fromthe maximum or minimum level.

-for constraining the; I endwise, the sieve being free 2. In a jiggingmachine, the combination I .with a hutch and with a sieve therein ofmechanism for actuating the sieve to different levels, and guidingmeans,.a' dditional to the actuating mechamsm,

' thesiev'e being free from-the influence o.s'tri1ctural compellingmeans to move endwise in either direction during the first'part of itsupward motion.

3. with a hutch andwith a sieve therein of mechanism for actuating thesieve to different levels, and guiding means, additional to the.actuating mechanism, for constraining the sieve to move endwise, thesieve being free from the influence of-structural compelling means tomove endwlse 1n either direction for constraining the n a iggingmachine, the combination during the first part of its downward motion.

4 In a igging machine, the combination a sieve therein of active meansfor actuating the sieve, and passive means, additional to and modifyingthe motion of the actuating means,.for guiding the sieve and forming alost motion connection. between the sieve and the hutch whereby the'sieve will have a closed path motion- 5. In a jigging machine, with ahutch-,and with means'for transmittin for-actuating the sieve, links,additional to the means, forguiding the sieve to move the same endwise,the said links connecting the sieve to the hutch and each connectionhaving a lost motion for varying the effective operative length of thelink.

n a jigging machine, the combination and with a sieve therein of meansfor transmitting power to the sieve for. actuating the sieve, and aplurality of passive connections, additional to the power transmittingmeans, between the sieve and the hutch for guiding the sieve to move thesame endwise, each connection comprisi a the combination a sieve theremof power to the sieve power transmitting plurality of parts one of whichis slid able with to another, the sieve and a plurality of being free tomove endwise during the first part of its niotlon from the maximum ormmImumlevel 8. In. a jigging machine, the combination the hutch wherebythe sieve will have a motion the return path of which is different 'fromthe forward path, the sieve being free tofall vertically by gravityduring the first part of its downward motion. 9.- Ina jigging machine,the combination -with a' hutch and with a sieve therein ,of

mechanism-for actuatingthe sieve to different levels, and means,additional to the actuating means for constraining the sieve to,

move'endwise, the sieve being free from the influence of structuralcompelling means during the first part of'its downward motion both tomove endwise in either direction and to fall vertically by gravity.

10. In a ji ging machine, the combination with a hutc mechanism foractuat' the sieve to different levels, and means or constraining thesieve to move endwise, the said means extending during the first part ofthe upward motioniof the sieve and retracting during the first part ofthe downward motion of the sieve whereby the sieve will have a closedpath motion.

11. In a 11gg1ng machine the combination with a hutch and with a sievetherein of and with a sieve therein of.

i mechanism for actuating the sieve to different levels, there being aconnection between I the hutch and the sieve for constraining the sieveto move endwise, the sieve being free from the influence of structuralcompelling means to move endwise in either direction during the firstpart of its upward or downward motion.

12. In a jigging machine, the combination with a hutch and with a sievetherein of mechanism for actuating the sieve to different levels, andguiding means for constraining the sieve to move endwise, the guidingmeans being inactive during the inception of each up or down stroke ofthe sieve.

13. In a jigging machine, the combination with a hutch and with a sievetherein of mechanism for actuating the sieve to diiierent levels, andguiding means for-constraining the sieve to move endwise, the guidingmeans being inactive during the inception of each up-stroke of thesieve.

14. In a jigging machine, the combination with a hutch and with a sievetherein of mechanism for actuating the sieve to difierent levels, andguiding means for constrain- GILBERT J. DAIVBARN.

Witnesses:

T. C. CAPEN,

OLIVIA ALLEN.

ing the sieve to move endwise, the guiding

